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Edward 8/21/2012

1991 Mercedes Benz 560SEL Base 8 Cyl 5.6L

Transmissions & Drivetrains

Does a bad modulator cause hard shifting when car changes gears.

The symptoms happen when car is hot or cold. The gears shift hard when changing; it started about a week ago. There is a warning light on, I believe, that is a suspension light, no check engine light is on or any other warning lights. The problem occurs when I am driving the car.

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